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1. A
   Foam rubber
2. B
   Froth
3. C
   Gelatin
4. D
   Hair cream

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1. A
   6 g urea dm$^{-3}$ and 85.5 g sucrose dm$^{-3}$
2. B
   15 g urea dm$^{-3}$ and 34.2 g sucrose dm$^{-3}$
3. C
   6 g urea dm$^{-3}$ and 34.2 g sucrose dm$^{-3}$
4. D
   15 g urea dm$^{-3}$ and 171 g sucrose dm$^{-3}$

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1. A
   III > II > I
2. B
   I > III > II
3. C
   II > I > III
4. D
   I > II > III

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1. A
   Rb
2. B
   K
3. C
   Na
4. D
   Li

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1. A
   Pent-3-en-1-amine
2. B
   Pentanal
3. C
   Pent-3-enal
4. D
   Pent-3-en-1-ol

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1. A
   HF
2. B
   $\text{NH}_3$
3. C
   $\text{BF}_3$
4. D
   $\text{CHCl}_3$

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1. A
   0.05 M
2. B
   0.1 M
3. C
   0.15 M
4. D
   0.2 M

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1. A
   3-Carboxy-5-ethyl phenol
2. B
   5-Carboxy-3-ethyl phenol
3. C
   3-Ethyl-5-hydroxy benzoic acid
4. D
   5-Ethyl-3-hydroxy benzoic acid

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1. A
   Hg
2. B
   Cd
3. C
   In
4. D
   Ag

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1. A
   $6.7\times10^{-9}$
2. B
   $9.0\times10^{-9}$
3. C
   $1.12\times10^{-9}$
4. D
   $4.9\times10^{-9}$

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1. A
   Potassium salt of phthalimide
2. B
   N-alkyl phthalimide
3. C
   Phthalic acid
4. D
   Primary amine

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1. A
   54 g mol$^{-1}$
2. B
   90 g mol$^{-1}$
3. C
   120 g mol$^{-1}$
4. D
   60 g mol$^{-1}$

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1. A
   Polycarbonate
2. B
   PVC
3. C
   Buna-N
4. D
   Polyacrylamide

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1. A
   Furan – S
2. B
   Pyrrole – N
3. C
   Thiophene – O
4. D
   Piperidine – S

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1. A
   Simple
2. B
   Body-centred
3. C
   Face-centred
4. D
   Base-centred

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1. A
   $P_{total} = \frac{P_1}{x_1}$
2. B
   $x_1 = \frac{P_1}{P_{total}}$
3. C
   $P_{total} = \frac{1-P_1}{x_1}$
4. D
   $P_{total} = \frac{P_1}{1-x_1}$

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1. A
   Bromobenzene
2. B
   Bromophenyl methane
3. C
   4-Bromotoluene
4. D
   1-Bromo-2-phenylethane

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1. A
   It failed to account for finer details of hydrogen spectrum.
2. B
   It is unable to explain atomic spectrum other than hydrogen.
3. C
   It explains Zeeman effect.
4. D
   It failed to explain ability of atoms to form molecules by chemical bonds.

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1. A
   $725\ \Omega^{-1}\ \text{cm}^{-1}$
2. B
   $5870\ \Omega^{-1}\ \text{cm}^{-1}$
3. C
   $1.38\times10^{-4}\ \Omega^{-1}\ \text{cm}^{-1}$
4. D
   $4.72\times10^{-4}\ \Omega^{-1}\ \text{cm}^{-1}$

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1. A
   Cleveite
2. B
   Carnallite
3. C
   Chile saltpetre
4. D
   Baryte

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1. A
   Phloroglucinol
2. B
   Pyrogallol
3. C
   Quinol
4. D
   Catechol

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1. A
   $1.250\ \text{mol dm}^{-3}\text{sec}^{-1}$
2. B
   $2.125\ \text{mol dm}^{-3}\text{sec}^{-1}$
3. C
   $3.105\ \text{mol dm}^{-3}\text{sec}^{-1}$
4. D
   $2.0\times10^{-2}\ \text{mol dm}^{-3}\text{sec}^{-1}$

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1. A
   Ti
2. B
   V
3. C
   Hg
4. D
   Ag

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1. A
   3.46 kJ
2. B
   4.16 kJ
3. C
   2.08 kJ
4. D
   6.12 kJ

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1. A
   Primary amine
2. B
   Amide
3. C
   Phenol
4. D
   Benzoic acid

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